| Standard label: | Discontinued Operation, Amounts of Material Contingent Liabilities Remaining |
| Name: | us-gaap:DiscontinuedOperationAmountsOfMaterialContingentLiabilitiesRemaining |
| Documentation: | Amounts of material contingent liabilities, for example, but not limited to, product or environmental liabilities or litigation, that remain with the entity despite the disposal of the disposal group that is classified as a component of the entity. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DiscontinuedOperationAmountsOfMaterialContingentLiabilitiesRemaining |
| Label | Role | Language |
| Discontinued Operation, Amounts of Material Contingent Liabilities Remaining | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 205 20 S99 2 (SAB Topic 5.Z.5.Q2) | http://fasb.org/us-gaap/role/ref/legacyRef | 205 |
| FASB Accounting Standards Codification 450 20 50 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |
| FASB Accounting Standards Codification 450 20 50 3 | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |
| FASB Accounting Standards Codification 450 20 50 4 | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |
| FASB Accounting Standards Codification 450 20 50 5 | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |
| FASB Accounting Standards Codification 450 20 50 6 | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |
| FASB Accounting Standards Codification 460 10 50 2 | http://fasb.org/us-gaap/role/ref/legacyRef | 460 |